Partially ordered vortex lattices in the high-field low-temperature mixed state of quasi-two-dimensional organic superconductors

被引：3

作者：

Maniv, A. ^{[1
]}

Zhuravlev, V. ^{[2
]}

Maniv, T. ^{[2
]}

Ofer, O. ^{[2
]}

Rommel, R. ^{[3
]}

Mueller, J. ^{[3
]}

Sonier, J. E. ^{[4
,5
]}

机构：

[1] NRCN, IL-84190 Beer Sheva, Israel

[2] Technion Israel Inst Technol, Schulich Fac Chem, IL-32000 Haifa, Israel

[3] Goethe Univ Frankfurt, SFB TR49, Inst Phys, D-60438 Frankfurt, Germany

[4] Simon Fraser Univ, Dept Phys, Burnaby, BC V6T 1Z1, Canada

[5] Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 13期

基金：

加拿大自然科学与工程研究理事会;

关键词：

MUON-SPIN ROTATION; PHASE-DIAGRAM; FLUX-LATTICE; DIMENSIONAL CROSSOVER; LAYERED SUPERCONDUCTORS; THERMAL FLUCTUATIONS; BI2.15SR1.85CACU2O8+DELTA; VORTICES; LIQUID;

D O I：

10.1103/PhysRevB.91.134506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the results of high-field, low-temperature mu SR measurements of the quasi-two-dimensional organic superconductors kappa-(ET)(2)Cu(NCS)(2), and kappa-(ET)(2)Cu[N(CN)(2)] Br. The mu SR lineshapes for these compounds indicate the existence of partially ordered vortex lattice phases in the high-magnetic-field regime, up to 2.5 T for the former compound and 4 T for the latter compound. The observed sharp loss of order is found to be consistent with a vortex-lattice melting transition that is predicted by numerical simulations of weakly coupled layers of pancake vortices. It is argued that the robustness of the partially ordered vortex lattice phases could be due to strong flux-line pinning by a dilute ensemble of defects.

引用

页数：5

共 38 条

[1] Dimensional crossover in the magnetic phase diagram of Bi2.15Sr1.85CaCu2O8+delta crystals with different oxygen stoichiometry [J].